Research On Ⅵ Model Of Dynamic Equilibrium In Eco-industrial Chain And Its Application

Eco-industrial chain (EIC) is an important carrier for the enterprises in the eco-industrial park to reduce the risk of environmental liability, allocate resources and create value through the bureaucracy, market and network coordination mechanism. As a core organizational form of the eco-industrial park, its balancing and optimization concerns whether eco-industrial park can be operated continuously and efficiently so as to realize efficient management. As the promotion of the nonlinear complementarity problem, Variational Inequality (VI) is able to accurately describe and characterize the equilibrium problems in the operation of economic system and provides an unified computing framework to optimization problems and equilibrium problems. This thesis focused on the effects of factors like product differentiation and corporate social responsibility on eco-industrial chain dynamic equilibrium, these factors were analyzed by establishing VI model of ecological industry chain dynamic equilibrium. The main research works are as follows:1. This thesis analyzed and summarized the research, methods and progress of EIC at domestic and overseas, then from an economic point of view analyzed the main incentives which affect the EIC dynamic equilibrium such as the the internal and external motivations that push the operation of EIC. Furthermore, the development profiles of VI theoretical method as well as its applications and advantages in various research areas were introduced.2. Eco-industrial chain dynamic equilibrium based on product differences has been studied. Considering the differences of new products and remanufactured products that produced by manufacturer enterprises in EIC, the different needs of the two products due to consumer preferences and the incentive effects of the government subsidy policy for the decomposer enterprises on the ec-industrial chain enterprises, we analyzed optimality conditions of the various decision-makers, established a corresponding VI model and proved the existence of the solution. Then it was soloved by using software tools such as Lingo and Matlab, finally a combined case was analyzed.3. Aiming at the stimulation effectiveness and the influence on enterprise decision of each layer in EIC created by the EIC enterprises in performing social responsibility, a multi-stages and multi-standards supernetwork model based on the rules that profit maximization, risk minimization and value maximization of the relationships among stakeholders which includes producers, consumers and decomposer enterprises was constructed. Then we built the dynamic equilibrium conditions of each enterprise and the entire EIC by using variational inequalities, analyzed effects of corporate social responsibility intrinsic motivation on EIC dynamic equilibrium. Through analysis of specific eco-industrial chain in Kalundborg eco-industrial park, it was proved that corporate social responsibility can improve the EIC overall effectiveness while the efficiency of government incentives can weaken marginal transaction costs of the eco-industrial chain. The volume of business, profits, cost-benefit and even the profit of entire EIC would be promoted with the social responsibility standard of the enterprises increasing in EIC; this was in line with the actual situation and verified the rationality of the model.